Comparing the success rate of free gingival graft treatment with and without using periodontal dressing in increasing keratinized gingival width and vestibule depth: a randomized clinical trial

Determination of the success rate of free gingival graft treatment in increasing keratinized gingival width and vestibule depth with and without using periodontal dressing

Clinical trial with a control group, with parallel groups, double-blind, randomized, phase 3 on 26 patients. Randomization is done in a simple and individual way, and a table of random numbers is used for randomization.

The study is in the field of improving the quality of gingival tissue. Gingival transplant surgery will be performed for patients without sufficient keratinized gingiva in two groups, with and without using periodontal dressings, at Tehran Faculty of Dentistry. The researcher and the analyst are blinded to the study groups.

Inclusion criteria: people who have placed at least two implants at the posterior of the mandible due to partial edentulousness (as the most posterior teeth); Patient who have insufficient vestibular depth in this place. Exclusion criteria: systemic disease that interferes with wound healing; alcohol and drug abuse; smoking; uncontrolled periodontal disease; pregnant and lactating mothers; patients with parafunctional habits.

Intervention group: Free gingival graft surgery is performed in the edentulous area posterior of the mandible. The graft is harvested from the palate area. Finally, it is fixed in the intended place with stitches. Then, in patients, periodontal dressing is used in the place of fixation. Control group: Free gingival graft surgery is performed in the edentulous area posterior of the mandible. The graft is harvested from the palate and fixed in the desired place with sutures.

The depth of the vestibule; Keratinized gingiva.

Simple and individual randomization; People who meet the entry criteria are assigned a number and enter the study. Then, each number representing the patient is placed in one of the 2 intervention and control groups by the random number table. Sealed envelope method will be used for allocation concealment. Determining the placement of the dressing is written in the envelope for each patient, then on the day of the surgery, and at the end of that, the envelope for the patient is opened, and based on that, the dressing is placed or not at the surgery site.

The researcher and the statistical analyst are blinded to the type of surgical technique performed in each patient. The data in two groups A and B will be given to the analyzer without mentioning whether each group is a test or a control. There is no possibility of blinding the patients due to the observation of the dressing in the mouth. Also, until the end of the surgery and the placement of the dressing, the surgeon is unaware of which group the patient is in, so that the surgical procedure does not differ between the groups.